Textiles: spinning – twisting – and twining – Strand structure – Longitudinal variation
Patent
1979-10-09
1981-05-05
Watkins, Donald
Textiles: spinning, twisting, and twining
Strand structure
Longitudinal variation
57 6, 57328, 57210, D02G 334
Patent
active
042650828
ABSTRACT:
After a polyester tow having a total denier of 5000 de is drafted at a ratio of between 10 and 20 and stretch broken, the obtained fiber bundle of staple fibers is subjected to a false twisting operation by means of a fluid jet nozzle, and then the false twisted fiber bundle is wound several turns around a hot roller heated at a temperature of 220.degree. C. and located in a detwisting region downstream from the false twisting nozzle. The surface fibers, which extend outwards because of the centrifugal force generated by the rotation of the fiber bundle during the detwisting thereof, suddenly stopped rotation when the fiber bundle contacts the hot roller, and the surface fibers wrap around the body portion of the fiber bundle to form a plurality of individual wrapping portions, in each of which the surface fibers are interlaced each other. Thus a spun-like yarn is obtained.
REFERENCES:
patent: 3079746 (1963-03-01), Field
patent: 3116588 (1964-01-01), Breen et al.
patent: 3279164 (1966-10-01), Breen et al.
patent: 3365872 (1968-01-01), Field
patent: 3367095 (1968-02-01), Field
patent: 3732684 (1973-05-01), Csok et al.
patent: 4003194 (1977-01-01), Yamagata
Kasaoka Katsuyuki
Sasaki Yoshiyuki
Teijin Limited
Watkins Donald
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